Disk harrow.



U. S. SHARP.

DISK HARBOW. APPLICATION FILED 113.25, 1911.

1,007,496 Patented Oct. 31, 1911.

I 3 SEEETSSHEET 1.

WITNESSES: I Y I INVENTOR.

J W'Z V CharbesS-Sharp- BY A z; rg vfiy.

G. S. SHARP. DISK HARROW.

APPLICATION FILED FEB. 25, 1911.

4o 55 J51r 6 7 40 v 5 J4 L5 I I J6 5 6 f 8 8 l6 9 J1 11; ll 1 9WITNESSES INVENTOR. CharLes S-Shaw- 2 I L T K G. S. SHARP.

" DISK HARROW.

APPLICATION FILED FEB. 25,1911.

Patented Oct. 31, 191-1.

3 SHEETS-SHEET 3.

WITNESSES 1N VEN TOR. GHQ/F565 5611a] /A TTORNE Y.

UNITED STATES PATENT OFFICE. v

cnmns s. sneer, or AUBURN, NEW YORK, essrenon To INTERNATIONAL nnn-TESTER COMPANY, A CORPORATION OF NEW JI'ERSEY.-

DISK HABROW.

Specification of Letters Patent.

Patented 0a. 31, 1911.

Application filed February 25, 1911. Serial No. 610,713. I

To all whom it may concern: Be it known that I, CHARLES S. SHARP, a

citizen of the United States, residing at Auburn, in the county ofCayuga and State of New York, have invented certain new and usefulImprovements in Disk Harrows, of

which the following is a specification.

My invention relates to disk harrows of the adjustable gang class,wherein two separate gangs of dis s are flexibly connected with a draftframe in a manner permitting adjustment thereof relative to the line ofdraft, and a rocking movement about an axis arranged in the direct-ionof the line of draft for the purpose of allowing the gan s to follow anyirregularities in the sur ace of the ground; the object of my inventionbeing to provide improved means for yieldingly pressing the inneradjacent ends of the gangs in contact with the soil. I attain thisobject by means of the mechanism illustrated in the accompanyingdrawings, in Which I Figure 1 is a top plan view of a harrow having myinvention forming a part, thereof; Fig. 2 is a rear end elevation ofpart of Fig. 1; Fig. 3 is a side elevation of Fig. 2; Fig. 4 is anenlarged rear elevation of part of Fig. 2; and Fig. 5 is a sideelevation of Fig. 4.

The same reference numerals designate like parts throughout the severalviews.

1 represents a U-shaped draft frame having a transverse bar 2 secured tothe rearwardly extending side members 3 thereof, and 4 representslongitudinally arranged draft frame members having their forward endssecured to the transverse portion of the U-shaped draft frame and theirrear ends to the transverse bar 2, the members 4 being spaced apart andreceiving between their forward ends a draft tongue 5.

6 represents gang frame members oppositely disposed and having dependingbars 7 secured thereto, the lower ends of the bars being secured tobearing boxes 8 having ang axles 9 journaled therein, the axles mcludingrods 10 and the usual spacing thimbles 11 mounted thereon, and betweenwhich the disks 12 are clamped.

13 represents brackets secured to opposite ends of the transverse bar 2of the draft frame and having depending socket members 14 adapted toreceive the upper ends of gang supporting bars 15 in a manner permittingsaid bars to swing transversely at their lower ends relative to the lineof W draft, the lower ends being turned forward and received by openings16 in the intermediate bearing boxes of each gang, the openings beingarranged 'at right angles with the gang axles and permitting the gangsto rock about the axes of the forgvardly turned portions of thesupporting ars. I 17 represents draft links upon opposite sides of thedraft frame having their forward ends pivotally connected with the sidemembers of the draft frame and their rear ends with the intermediatebearing boxes forward of the axles.

18 represents hand levers, one for each gang, pivotally connectedintermediate their ends with the lower sides of toothed sector brackets19 that are secured to the draft frame members 4, the levers beingprovided with a common form .of thumb lever detent mechanism adapted toretain thelevers in i adjusted relation with said 'toothed sectors, thelower ends of the levers being ivotally connected with the inner bearingboxes of each gang by means of links 20 whereby the operator, bymanipulating the hand levers, may vary the angle of the gangs relativeto the line of draft, and 21 represents an operators seat supported by aspring 22. i

. 23 represents a rocking bracket having depending ear portions 24, bymeans of which the bracket is pivotally connected Erith the rear ends ofthe draft frame memers 4. Y

25 represent arms integral with the bracket and extending rearward areprovided at their rear ends with hooked portions 26 that are received byopenings 27 in loop members 28 uponopposite sides of a cylindrical cup29. A compression spring 30 is received by the cup, and 31' represents alink surrounded by the spring, the upper end of the link being slidablyreceived by an opening in the upper wall of the cup and provided with aretaining key 32, the lower end of the link being pivotally connected bymeans of a pin 33 with the middle portion of two short transverselyarranged rocker bars 34 upon opposite sides of the link, and 35represents a cont-act member slidably received by the lower end of thelink, having a head portion 36 engaging with the compression spring, andcurved hearing portions 37 at its lower end adapt/ed go contact with theupper edges of the rocker l ars.

38 represents pressure bars having their forward ends pivotallyconnected wlth the sector brackets 19 and extending rearward have theirbody portions in slidable engagement with the upper surfaces of the ganframe members, and their rear ends turne upward at 39 and ivotallyconnected with the opposite ends 0 rocker bars 34 by means of pins 40,and 41 represents a link having an eye at one end adapted to receive oneof the pins 40, and its opposite end pivotally connected with the draftframe member 2 in amanner to resist a lateral swing of the disk gangs.An arm 42 extends forward and upward from the rockin bracket 23,

- and secured thereto is a handiever 43 that may be manipulated by theoperator for the purpose of throwing more or less pressure upon theinner ends of the gang frames through the intermediacy of thecompression spring and its associated mechanism.

44 represents a dog ivotally connected with the hand lever, having itsforward end adapted to engage with a toothed plate 45 secured to one ofthe bars 4 in a manner to secure the rocking bracket in any position ofadjustment, and its rear end provided witha treadle portion 46 withinconvenient reach of the operator, whereby he may control the movement ofthe dog.

What I claim as my invention, and desire .5 to secure by Letters Patent,is:

' 1. A disk harrow including, in combination, a draft frame, two diskgang frames flexibly connected with said draft frame in a mannerpermitting said gang frames to 40 turn about vertical and horizontalaxes, pressure bars having their forward ends pivotally connected withsaid draft frame and their body portions slidably engaging with saidgang frames, and a rocker bar 45 having its opposite ends pivotallyconnected lwith the rear adjacent ends of said pressure ars.

2. A disk harrow including, in combination, a draft frame, two disk gangframes lo. flexibly connected with said draft frame in a mannerpermitting said gang frames to turn about vertical and horizontal axes,pressure bars having their forward ends pivotally connected with saiddraft frame and 85 their body portions slidably engaging with said gangframes, a rocker bar having its opposite ends pivotally connected withthe rear adjacent ends of said pressure bars, and a link having one endpivotally connected with M one end of said rocker bar and extendinglaterally therefrom is pivotally connected at its opposite end with saiddraft frame.

3. A disk harrow including, in'c0mbina tion, a draft frame, two disk ganframes flexibly connected with said draft rame in menace a mannerpermitting said gang frames to turn about vertical and horizontal axes,pressure bars having their forward ends pivotally connected with saiddraft frame and their body portions slidably en aging with said gangframes, a rocker bar avivlilg its opposite 'ends pivotally connectedpivotally connected with said draft frame and their body portionsslidably engaging with said gang frames, a rocker bar having itsopposite ends pivotally connected with the rear adjacent ends of saidpressurebars, a rocking bracket pivotally mounted upon said draft frameand having arms extending rearward therefrom, a compression springinterposed between said arms and said rocker bar, and means for rockingsaid bracket in a manner to apply more or less pressure to said rockerbar.

5. A disk harrow including, in combination, a draft frame, two disk gangframes flexibly connected with said draft frame in a manner permittingsaid gang frames to turn about vertical and horizontal axes, pressurebars having tl'feir forward ends pivotally connected with said draftframe and their body portions slidably engaging with said gang frames, arocker bar having its opposite ends pivotally connected with the rearadjacent ends of said pressure bars, a rocking bracket pivotally mountedupon said draft frame and having arms extending rearward therefrom, acylindrical cup having loop portions upon opposite sides thereof, therear ends of said arms being received by said loops, 2. link having itslower end. pivotally connected with said rocker bar and its oppositeupper end slidably connected with the upper wall of said cup, acompression spring surrounding said link and operative between the upperwall of said cup and said rocker bar, and means for rocking said bracketin a manner to apply more or less pressure to said rocker bar.

6. A disk harrow including, in combination, a draft frame, two disk gangframes flexibly connected with said draft frame in a manner permittingsaid gang frames to turn about vertical and horizontal axes, pressurebars having their forward ends pivotally connected with said draft frameand their body portions slidably engaging with said gang frames, arocker bar having its opposite ends pivotally connected with the rearadjacent ends of said pressure bars, a rockin bracket pivotally mountedupon said dra frame and having arms extending rearward therefrom, acompression spring interposed between said arms and said rockerbar,a-hand'leversecured to said rockin bracket, a dog pivotadly mounted onsaid lever, and a toothed plate secured to said draft frame, said dogadapted to 1 engage witlr said plate to hold said bracket in adjustedposition in a manner to apply 10 more or less pressure to said rockerbar.

CHARLES s. SHARP.

Witnesses:

K. T. ELLIOTT, C. W. Emnonr.

